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Finding the Fourth Proportional to 72,580,939.20, 108,871,408.80 and 21,458,404.80

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Solution

The fourth proportional to 72,580,939.20, 108,871,408.80 and 21,458,404.80 is: 32,187,607.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,580,939.20 : 108,871,408.80 = 21,458,404.80 : x
  2. Step 2: Convert to fraction form
    72,580,939.20/108,871,408.80 = 21,458,404.80/x
  3. Step 3: Cross multiply
    72,580,939.20x = 108,871,408.80 × 21,458,404.80
  4. Step 4: Simplify right side
    72,580,939.20x = 2,336,206,761,176,682.50
  5. Step 5: Solve for x
    x = 2,336,206,761,176,682.50/72,580,939.20
  6. Step 6: Final answer
    x = 32,187,607.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.